Ethan Mollick says large firms were annoyed by OpenAI sunsetting GPTs

Ethan Mollick says leaders at large firms were still relying on GPTs last month, before OpenAI sunset them.

In an X post on October 11, 2026, he says GPTs had outlived their usefulness, but large organizations plan complexly, so the lab's sudden change confused them. The report is a single post by Mollick, and no OpenAI statement or details of the sunset appear in the available material.